Here are the possible solutions for they're sent out from hq clue
Answer
Clue
Relevancy
ateam
Clue
Crack commando unit sent to prison by a military court for a crime they didn't commit, before escaping to the Los Angeles underground where today, still wanted by the government, they survive as soldi
apbs
Clue
They're sent out to cruisers
They're sent out from HQ
thankyouletters
Clue
They're sent out after weddings
aces
Clue
They don't get sent back to the server
Definition
ACE, to serve an unreturnable shot e.g. in tennis
balloons
Clue
They may be sent up in trials
Definition
BALLOON, to swell out
envs
Clue
They're often sent by the USPS
faxes
Clue
They're sent and received
Definition
FAX, to send messages via a machine that scans electronically
